Method for production of cutting tools
CA 1298235 C · Owner: Kurbatova, Elena I. · Inventors: Kurbatova, Elena I.; Zhed, Viktor P.; Boyarunas, Albert M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for production of cutting tools from an iron-based alloy, provided with a wear-resistant coating based on interstitial phases consists in that the wear-resistant coating is deposited by virtue of condensing a cathode material evaporable by an arc discharge, use being made of titanium or a titanium-based alloy as the cathode material. Upon depositing the preset-thickness coating an, oxygen-containing redox gas or gaseous mixture is fed into the vacuum chamber and the cutting tool is heated up to the temperature of the eutectoid decomposition in the pseudobinary 'iron-titanium' system. Thereupon the cutting tool is subjected to annealing in an atmosphere of the oxygen-containing …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted March 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.